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Intangible assets - Summary of Sensitivity Analysis of Significant Actuarial Assumption (Detail) | Dec. 31, 2024 | Dec. 31, 2023
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Networks [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates | 9.50% | 10.00%
Terminal growth rates | 2.00% | 2.00%
Cloud Software and Services [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates | 10.00% | 10.50%
Terminal growth rates | 1.50% | 1.50%
Global Communications Platform [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates | 13.50% | 11.00%
Terminal growth rates | 3.50% | 3.50%
Enterprise Wireless Solutions [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates | 11.00% | 11.00%
Terminal growth rates | 3.50% | 3.50%
iconectiv [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates |  | 10.50%
Terminal growth rates |  | 3.50%
Emodo [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates |  | 14.50%
Terminal growth rates |  | 2.00%
Red Bee Media [Member] |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax discount rates |  | 12.50%
Terminal growth rates |  | 2.00%

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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 134 -Subparagraph d -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_d_iv&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 134 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_iv&doctype=Standard -URIDate 2024-03-27 + Details
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